Thomas walker



(No Model.)

T. WALKER.

GULTIVATING PLOW.

No. 388,935. Patented Sept. 4, 1888.

N PETERS Phnlc-Liihngnphar. Wauhinglan. ac.

UNiTnb STATES PATENT @rrrcs.

THOMAS WALKER, OF YORKVILLE, ILLINOTS.

CULTIVATING=PLOW.

EPECIPICATIQN forming part of Letters Patent No. 388,935, dated September Application filed May 21, 1888. Serial No. 274.535.

(No model.)

To aZZ whom it may concern:

Be it known that I, THOMAS WALKER, a citizen of the United States, residing at Yorkville, in the county of Kendall and State of Illinois, have invented a new and useful Improvement in Cultivating-Flows, of which the following is a specification.

My invention relates to an improvement in cnltivatingplows; and it consists in the peculiar construction and combination of devices, that will be more fully set forth hereinafter, and particularly pointed out in the claims.

In the drawings, Figure l is a side elevation of a cultivating- )low embodying my improvements. Fig. 2 is a top plan view of the same. Fig. 3 is a detailed perspective view of one of the plow-teeth and its attachments.

A represents a pair of parallel beams, which have their front ends connected to a suitable axle (not shown,) provided with supportingwheels. From the upper sides of the said beams, near the centers thereof, project ears B, to which are pivoted the ends of a transverse U shaped yoke-bar, G, the said yoke bar being connected to the said cars by means of bolts and having adjusting-openings D in its ends, whereby the distance between the beams may be regulated. To the rear ends of the beams A are secured a pair of obliquely-arranged beams, E, which diverge rearwardly, the said beams E being secured near their central portions, as shown. The front ends of said beams E are connected to the beams A by means of diagonally-arranged bracerods F.

G represents a series of vertical openings, with which the beams E are provided, said openings being arranged at suitable regular distances apart.

H represents a series of plates, which are arranged on the upper and lower sides on the beams E, and are provided with longitudinal slots I, that register with the openings G. Bolts K pass through the said slots and through the said openings, and are provided with clamping-nuts L, the function of the said bolts being to secure the plates to the beams at any desired position, as will be readily understood, the plates being thereby pivoted to and adjustable on the beams. The rear ends of the said plates are bifurcated to form ears, and

between the said ears of each pair of upper and lower plates is secured the upper end of a vertical standard, M. The lower ends of the said standards are bent forward nearly at right angles to form arms N, and the front ends of the said arms are bent downward and curved, as shown, and adapted. to fit convex rear sides of cultivating teeth or plows O. The said plows or shovels are curved longitudinally, and have their upper ends twisted axially, so as to arrange them in an oblique direction. The said obliquelyarranged upper portions of the plows are turned in the same direction on each beam E, and thereby the said plows may be arranged so as to throw the furrows toward or from the rows of plants. The upper end of each standard M is pivoted between the ears of the upper plate by means of a bolt, P. The said standard has an opening which registers with openings in the ears of the lower plates, and a wooden or other frangible pin, T, passes through the said ears and through the said openings, so as to secure the standards normally in a vertical position. In the event that any of the plows should encounter an unyielding obstruction when the machine is in operation, the frangible pin in the standard of the said plow will break, and thereby permit said standard to turn rearward on the pivotal bolt P and allow the plow to be drawn over the obstruction uninjured.

By reason of the plates H being pivoted to the beams, the said plates may be turned so as to cause the plows to operate obliquely in the ground, so as to regulate the width of the furrows made by the said plows. The arms N at the lower ends of the standards serve to support the plows at such a distance in advance of the standards that the same are prevented from being choked when the machine is operated in foul ground.

Having thus described my invention, I claim- 1. The combination, with the beams E, of the plates H, pivoted to the said beams, the standards secured to the said plates, and the plows attached to the lower ends of the standards, substantially as described.

2. The combination, with the beams E, of the plates H, having the longitudinal slots I, the bolts extending through the said slots and through openings in the beams to clamp the plates thereto at any desired adjustment, and the standards secured to the said plates and having the plows, substantially as described.

3. The combination, with the beams of the plates pivoted to the beams and arranged one above the other in pairs, of the standards having their upper ends pivotally bolted to the upper plates, and 'the frangible pins connecting said standards to the lower plates, sub- 10 stantially as described. In testimony that I claim the foregoing as my own I havehereto affixed my signature in presence of two Witnesses.

THOMAS YVALKER.

\Vitnesses:

CHAS. XVEBER, AMos GARGRAVE. 

